Hi Paddy, hope all is good and going well with the wedding plans. I actually had a play with one of these three weeks ago. The spring is compressed by an internal battery operated motor that don't half make a bloomin' noise and takes an eternity to cock (and it seemingly eats batteries too ). Its firing cycle was quite smooth and quick for an umpteen year old however -- mind you, it should be as when new it was priced very close to the top of the air gun food chain. The one I played with was in .177 as I believe they all were/are (but if wrong hopefully someone will point this out ), and at a best guess (had no chrono with me), would guestimate it to be pushing out around 9ft.lb. The particular Browning I was flirting with was in absolute Lakey-esque mint condition and the guy who owned it was an ex-Browning rep who has since set up on his own. This rifle was not for sale as such, but it was mentioned that if he were to consider parting with it, the price would have to be for something the other side of £600. Hope this helps a little and keep in touch (Gareth).